Date: Thu, 17 Dec 1998 07:40:00 -0500 (EST) From: Troy Settle <rewt@i-Plus.net> To: "(ML) FreeBSD ISP" <freebsd-isp@FreeBSD.ORG> Subject: Re: Aliased IPs Message-ID: <Pine.BSF.3.96.981217071724.2973A-100000@Radford.i-Plus.net> In-Reply-To: <Pine.BSF.4.05.9812171028030.5340-100000@carmel.diva.nl>
next in thread | previous in thread | raw e-mail | index | archive | help
Ya know, the days of being able to get IPs at the drop of a hat are indeed
over. But, not because we're running out. I'd hazard to say that as much
as 40% of all IP space is still unallocated.
What then, is the purpose of conservation? It's simple, go to your
router, and do a 'sh ip bgp'. That should tell you everything you need to
know about why IP conservation is a good thing.
When we recently got our new T1, our provider gave us a /22. I quickly
renumbered into it, and found that I still needed another /24 so that I
could assign each virtual web site a unique address. My upstream didn't
even bat an eye at this, and gave me another /22 based on the fact that I
had already been efficient in how I used the first one.
If you want to talk about inefficient use of IP space, look at the people
who still hold their Class-{A,B,C} networks. Having this portable space
is insane, especially when a university has 2 Class-B networks, and then
subnets it out so that a lab with 24 workstations has a full /24.
A Class-A has >16 million addresses. Can anyone on this list suggest any
organization that can make _efficient_ use of it? No? Didn't think so.
--
Troy Settle <st@i-Plus.net>
Network Administrator, iPlus Internet Services
http://www.i-Plus.net
On Thu, 17 Dec 1998, Michiel Boland wrote:
> On Wed, 16 Dec 1998, Dan Busarow wrote:
>
> > On Wed, 16 Dec 1998, N wrote:
> > > I definitely *won't* have any problems when I deplete my assigned IP space
> > > and go to RIPE (living in Europe) to request more. You *will* have
> > > trouble getting new space if you've assigned all of your space to web
> > > hosts to cater for a very, very tiny minority of people who can be easily
> > > taken care of just as easily and almost as transparent in other ways.
> >
> > Not true. ARIN, on this side of the pond, recognizes web sites as
> > valid uses of IP space. Too many services common to web sites
> > (ftp, RealAudio/Video, LivePicture ...) require unique IPs for
> > virtual hosts.
>
> This argument is not entirely correct. Just because someone needs a unique
> number to host realaudio/whatever does not mean that he/she also needs a
> unique number for his/her web site. I would be *very* surprised (not to
> mention appalled :) if the practice of handing out IP addresses *just* for
> virtual HTTP servers is actually condoned by ARIN.
>
> --
> Michiel Boland <boland@diva.nl>
> Digital Valley Internet Professionals
> Duivendaal 4, Wageningen, The Netherlands
> Phone: +31 317 465555, Fax: +31 317 460276
>
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-isp" in the body of the message
>
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-isp" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.3.96.981217071724.2973A-100000>